A building permit is required in Cass County, Michigan, but the township, village or city where the property lies—not Cass County—issues building, mechanical, plumbing and electrical permits12. Local governments also administer zoning, so parcel rules vary across the county3. The Van Buren/Cass District Health Department handles onsite sewage approvals and well permits45.
At a glance
- Building permit
- Required, but issued by your township, village or city, not by Cass County12
- Zoning
- Local rules vary; the applicable township, village or city administers zoning and appeals3
- Septic
- Van Buren/Cass District Health Department approval or a sewage-disposal permit is required where public sewer is unavailable4
- Well
- New and replacement wells go through district site evaluation, design, permitting and final inspection5
- Owner-builder
- Not confirmed on any Cass County or district source; ask your township's building department directly6
- Occupancy approval
- A new habitable structure needs final Health Department approval of its sanitary facilities before local occupancy approval7
- Tiny home
- Private-land occupancy is not confirmed countywide; ask the parcel's local zoning office3
- Sewer connection
- Connect to public sewer when available; otherwise use an approved individual sewage-disposal system, subject to limited alternate-method exceptions8
Who to call
Also useful
Cass County: Building, Mechanical & Electrical Permit (township/city/village directory)
Directs a property owner to the specific township, city or village that issues building, mechanical, plumbing, electrical and zoning permits for that parcel
Also useful
Cass County Administration Office
General Cass County government contact; not a permit office, but a starting point if you cannot identify your township
120 N Broadway, Cassopolis, MI 49031
Zoning
LaGrange Township Zoning Administrator (a worked example of one of Cass County's 15 townships)
Zoning permits and questions for land inside LaGrange Township only; other townships, the city and the villages each run their own equivalent office
24863 Pokagon Highway, Cassopolis, MI 49031
Building permits
LaGrange Township Building Inspector (a worked example of one of Cass County's 15 townships)
Building permits and inspections for land inside LaGrange Township only; other townships, the city and the villages each run their own equivalent office
24863 Pokagon Highway, Cassopolis, MI 49031
Septic permits
Van Buren/Cass District Health Department, Environmental Health Division
Well inspections, well and septic permits, and septic system installation permitting for both Van Buren and Cass counties; call the Cass County location number
Contact details are copied from each office’s official page and were checked against it on September 29, 2026.
Do you need a building permit in Cass County, Michigan?
Yes. Cass County requires building permits, but building, mechanical, plumbing and electrical permits are administered by the township, village or city where the property is located12. Michigan's statewide construction code governs covered work, including the 2021 Michigan Building Code effective April 9, 2025, while the appropriate local enforcing agency receives the application910.
A new or altered building cannot be used or occupied until the code official issues a Certificate of Occupancy after required work is complete, permits are finaled and fees are paid11. For a newly constructed habitable structure, the local government also may not issue occupancy approval until the Van Buren/Cass District Health Department gives final approval to the sanitary facilities7. Cass County's materials do not confirm an owner-builder exemption, so ask the parcel's building department who may pull each permit6.
Who issues building permits in Cass County, and how do you find your township?
Cass County's permit directory lists the City of Dowagiac, the villages of Cassopolis, Edwardsburg, Marcellus and Vandalia, and the county's townships as the local units that administer permits2. Identify the parcel's municipality first, then use that unit's building office rather than sending an application to Cass County2. If the responsible unit is unclear, the Cass County Administration Office at 120 N Broadway in Cassopolis can be reached at 269-445-4420, although it is not the permit issuer12.
LaGrange Township illustrates the local setup: its Zoning Administrator is reached at 269-479-2387 and its Building Inspector at 574-849-5965, both at 24863 Pokagon Highway, Cassopolis, MI 490311314. Those contacts apply only inside LaGrange Township; a parcel elsewhere must use its own township, village or city office2.
Does Cass County have zoning?
Zoning applies in Cass County, but the ordinance and appeal process depend on the township, village or city where the parcel lies3. Michigan law provides a framework for local zoning districts but does not supply the parcel's actual district or dimensional rules15.
Cass County does not have one reliable countywide answer for setbacks, minimum lot size, minimum dwelling size, lot coverage, building height, accessory dwellings, manufactured homes or private RV occupancy; those details must come from the applicable local ordinance and zoning office3. Confirm the municipality and zoning district before treating a listing as buildable or choosing a house plan2. If land will be divided, Michigan's Land Division Act adds statewide plat review before a final plat can be submitted to the Register of Deeds16.
How do septic and well permits work in Cass County?
The Van Buren/Cass District Health Department administers onsite sewage approval in Cass County4. Where public sewer is unavailable, new construction cannot begin until the district approves the site or issues a sewage-disposal permit; where public sewer is available, newly installed sewage-producing facilities must connect to it, subject to limited alternate-method exceptions48. A property cannot lawfully be occupied without adequate sewage-disposal facilities that comply with the district rules17.
Call the Cass County location at 269-782-0064 or email [email protected] about septic installations and well work18. New and replacement wells go through site evaluation, system design, permit issuance and final inspection5. The district offers well and septic inspections for home sales, while a local code may separately require inspection for a short-term rental19. Only 1.4% of county soils rate without severe limitations for a conventional drain field, so obtain the site evaluation before fixing the house location or budget20.
Can you live in an RV or tiny home on your land in Cass County?
We could not confirm a countywide rule allowing or prohibiting private-land RV or tiny-home occupancy in Cass County. The applicable township, village or city administers its own zoning ordinance, so ask that local zoning office about the proposed parcel, length of stay, dwelling type and use before buying or moving a unit onto the land32.
Michigan's available tiny-house guidance is narrower than the private-land question: a tiny house used as a resort cabin is not treated as a recreational unit merely because it is on wheels, and it requires local zoning, building, electrical and plumbing permits and final approvals, plus applicable well and septic permits21. Cass County sanitation rules also prohibit occupying premises without adequate sewage disposal, require district approval for an individual system where applicable and require public-sewer connection when available, subject to limited alternate-method exceptions178.
Building a home in Cass County: the steps, in order
- Identify the parcel's township, village or city, because that local unit administers both building permits and zoning23.
- Ask the local zoning office to confirm the district, allowed use and parcel-specific dimensional rules before design begins3.
- Where public sewer is unavailable, obtain district approval or a sewage-disposal permit before new construction starts; also begin the required permit process for a new or replacement well45.
- Apply to the local enforcing agency for the building and applicable trade permits under Michigan's construction code19.
- Complete required construction and health inspections, then request the Certificate of Occupancy after work is complete and permits are finaled11.
- Before local occupancy approval for a new habitable structure, obtain final Health Department approval of its sanitary facilities7.
What should you check before you buy land in Cass County?
Confirm the parcel's municipality and zoning district first, then make the purchase contingent on acceptable septic, well and building approvals where practical345. Only 1.4% of Cass County soils rate without severe limitations for a conventional drain field, despite 97.7% of the land having slopes of 15% or less, so gentle ground alone does not establish septic suitability2022.
For a subdivision or site-development drainage plan reviewed by the Cass County Drain Commissioner, preliminary approval comes before final construction-plan review, fees precede approval and the preliminary decision is due within 30 days23. In that process, restrictive covenants must set floors at least 2 feet above the highest known groundwater and openings at least 1 foot above the 100-year floodplain or storm-system hydraulic grade line, unless the Drain Commissioner grants the supported engineering waiver24.
Watch-outs
- Cass County building permits and zoning rules come from the township, city or village where the parcel sits, so confirm the local unit before relying on a general county answer13.
- Only 1.4% of Cass County soils rate without severe limitations for a conventional septic drain field, so complete the district's site review before assuming a standard system will work204.
- No Cass County, township or district source confirms an owner-builder exemption; if you plan to do your own construction work, ask your specific township's building department directly rather than assuming Michigan's general rules allow it6.
- Cass County's private-land RV and tiny-home occupancy rules remain local and unconfirmed countywide, so call the parcel's zoning office before buying or moving a unit onto the land3.
- Cass County's Drain Commissioner elevation standards cited here apply to subdivision and site-development drainage review, not to every parcel as a universal floodplain zoning rule24.
Sources
- Cass County - Building, Mechanical & Electrical Permit (2026 county census)
- Cass County: Building, Mechanical & Electrical Permit (township/city/village directory) (casscountymi.org)
- Township / City / Village Info, quoted and re-checked
- Water & Septic, quoted and re-checked
- Water & Septic, quoted and re-checked
- (2026 county census)
- Van Buren/Cass County District Health Department Environmental Health Code, quoted and re-checked
- Van Buren/Cass County District Health Department Environmental Health Code, quoted and re-checked
- Code Books (Michigan statewide rule), quoted and re-checked
- Building Permit Information (Michigan statewide rule), quoted and re-checked
- Certificate of Occupancy Request (Michigan statewide rule), quoted and re-checked
- Cass County Administration Office (casscountymi.org)
- LaGrange Township Zoning Administrator (a worked example of one of Cass County's 15 townships) (lagrangetownshipmi.com)
- LaGrange Township Building Inspector (a worked example of one of Cass County's 15 townships) (lagrangetownshipmi.com)
- Michigan Zoning Enabling Act (Michigan statewide rule), quoted and re-checked
- Subdivisions (Michigan statewide rule), quoted and re-checked
- Van Buren/Cass County District Health Department Environmental Health Code, quoted and re-checked
- Van Buren/Cass District Health Department, Environmental Health Division (vbcassdhd.org)
- Water & Septic, quoted and re-checked
- Share of soils without severe limits for a conventional septic drain field (USDA SSURGO): Bolthole Index county data
- 2022 ARVC - General (Michigan statewide rule), quoted and re-checked
- Share of land at 15% slope or less: Bolthole Index county data
- Cass County Drain Commissioner Site Development Rules, quoted and re-checked
- Cass County Drain Commissioner Site Development Rules, quoted and re-checked
Written September 29, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.